Patent GB-191028474-A (GB)
Title: Improvements in or relating to Assembling or Lasting and like Machines for use in the Manufacture of Boots and Shoes.
Inventor: BOULT ALFRED JULIUS
IPC: A43D75/00
Filed: 1909-11-07
Granted: 1911-02-17
Abstract: 28,474. Boult, A. J., [United Shoe Machinery Co.]. Nov. 17, 19U9, [Convention date]. Loose-nailing.-An assembling or lasting machine has provision for the operator to suspend the operation of the tacking-mechanism, and automatic means for causing the tacking-mechanism to come into operation in the next cycle of operations of the machine after its suspension. The Figures show the application to the assembling and lasting machine described in Specification 26,698/09, [Class 17(i), Boots &c., Apparatus for making &c.]. Hammer rods 125 are operated from a driver-plate 126, which is the broadened front end of a lever fulcrumed at 128 upon a link 129 and having a depending hinged link 130, the foot of which rests upon a cam 132 on the front end of the main shaft 66. This cam lifts the driver-lever against the tension of the springs 134, which actuate the driver in its downward movement. A forked slide block 140 is adapted to be advanced by a lever, pivoted at 143 and having a handle 145, into a position under shoulders 146 on the driverraising link 130, and to prevent the descent of the lever for driving the tacks until the operator has seen if the lasting is properly done. The block 140 may then be retracted, or may be left in position until the next cycle of operations of the machine, whereupon it will be automatically withdrawn by the engagement of the upper end 147 of the lever with a wedge 148 on an oscillating tack-hopper 150. The tackhopper is oscillated by a rack-bar 152 through a spring 154 from a cam 155 on the main shaft 66. The hopper has a stud 156, between which and the wedge 148 the end 147 of the lever is set when the slide block 140 is advanced to prevent the descent of the drivers. This stud prevents the oscillation of the hopper through a sufficient angle to effect the separation and feeding of a second set of tacks until the hammers have descended to drive the first set. After the feeding-mchanism has been rendered ineffective for one cycle of operations, the wedge 148 forces the tack-stopping devices to normal position, thus allowing the driving of the first set of tacks and the separation of a second set. An indicator 180* to record the number of shoes operated upon has its actuating-lever 184 operated by an eccentric portion 185 of the hopper shaft. The indicator is moved only when the hopper has its full oscillation, and thus records the actual number of shoes operated upon, as distinguished from the number of times the machine is run. The tacks, which gravitate down raceway grooves, Fig. 4, from the hopper, are separated by a slide 160, with which moves a notched gate 162, and are delivered through oblique slots and eyes in the slide. There are five raceways, and the separating-mechanism is reciprocated twice in each cycle of operations to deliver ten tacks. A delivery slide 164 moves between a cap plate 166 and a tack-tube plate 165. The delivery slide has ten pockets arranged in two series, and is so positioned that, when the first series is in receiving position, the tacks falling in it will be stopped by the tack-tube plate 165. When the delivery slide 164 is moved to put the second series into receiving position, the first set of tacks is discharged, and the second set falls directly through the plates into the tubes, as shown in Fig. 4. The operating-mechanism for the tack-separator and slides is shown in Fig. 7. A pinion 168, driven from the hopper shaft, meshes with a pinion 170 of half the number of teeth, which has a crank connected to a block 172 in a fork of the separator driving-bar 174, and from which the bar and the separating- devices receive a complete reciprocatory movement during the oscillatory movement of the pinion 168 in the one direction and a second complete reciprocation during its movement in the reverse direction. The crank has a stud 175 arranged to engage with an arm 176 on a shaft 178, that has a tooth 179 having a yielding connexion with the delivery slide 164 by means of spring plungers.